Watch live: DHS secretary testifies on border security

Homeland Security Secretary Alejandro MayorkasAlejandro MayorkasHillicon Valley —TSA to strengthen rail sector cybersecurity TSA issues directives to rail sector to strengthen cybersecurity US to restart 'Remain in Mexico' program following court order MORE on Tuesday is testifying before the Senate Judiciary Committee on border security.

The hearing begins at 10 a.m.

Watch the live video above.